<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="text" placeholder="员工姓名" id="i1">
<input type="text" placeholder="员工工资" id="i2">
<input type="text" placeholder="员工工作" id="i3">
<input type="button" value="添加" onclick="f()">
<table border="">
    <caption>员工列表</caption>
    <tr>
        <th>姓名</th>
        <th>工资</th>
        <th>工作</th>
    </tr>
    <script>
        //读值
        let i1 = document.querySelector("#i1");
        let i2 = document.querySelector("#i2");
        let i3 = document.querySelector("#i3");
        let t = document.querySelector("table")

        function f() {
            //创建标签
            let tr = document.createElement("tr");
            let nameTd = document.createElement("td");
            let salaryTd = document.createElement("td");
            let jobTd = document.createElement("td");
            //把文本框中的内容取出赋值给td
            nameTd.innerText = i1.value;
            salaryTd.innerText = i2.value;
            jobTd.innerText = i3.value;
            tr.append(nameTd, salaryTd, jobTd);
            t.append(tr);
        }
    </script>
</table>
</body>
</html>